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ARM: ARMv6 optimised FASTDIV

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Originally committed as revision 14242 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård 2008-07-15 19:06:18 +00:00
parent de0e19cc38
commit 6651ce17b8
1 changed files with 7 additions and 0 deletions
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7
libavutil/internal.h
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@ -154,6 +154,13 @@ extern const uint32_t ff_inverse[256];
);\
ret;\
})
#elif defined(HAVE_ARMV6)
static inline av_const int FASTDIV(int a, int b)
{
int r;
asm volatile("smmul %0, %1, %2" : "=r"(r) : "r"(a), "r"(ff_inverse[b]));
return r;
}
#elif defined(ARCH_ARMV4L)
# define FASTDIV(a,b) \
({\